Vacuum-creating instrument



- March 1 1927. q

v F; WINTERS VACUUM CREATING INSTHUMEN'I Fil ed Feb. 14. 1 925 .2 Sheets-Sheet 1 March 1,1927. 1,619,389

F. V. WINTERS VACUUM CREATING INSTRUMENT Filed Feb. 14 -192'5 2 Sheets-Sheet 2 grwenloz Patented Mar. 1, 1927.

UNITED STATES FREDERICK V. WINTERS, OF NEW YORK, N. Y.

Application filed February This invention relates to vacuum creating instruments, an object of which is to provide means of a simplified nature whereby the movable element of the vacuum creating device is assured of proper and even movement at all times during the operation and overcoming the possibility of the vacuum being prematurely destroyed or impaired.

The present invention has special reference to the vacuum creating instruments disclosed by my co-pending applications Serial Nos. 7431 and 8073; the present device providing means whereby the movable elements in the inventions disclosed by the said applications may be more effectively actuated.

Other objects will appear hereinafter.

The invention will be described with reference to the accompanying drawings, wherein preferred embodiments of the invention are disclosed.

In the drawings:

Fig. 1 is a side elevation, of one form of vacuum creating device embodying the invention, a part of the gear frame beingremoved,

Fig. 2 is a top plan of the device shown in Fig. 1,

Fig. 3 is a sectional view taken substan tially upon line 3-3 of Fig. 1,

Fig. 1 is asimilar view illustrating the invention as adapted to a different form of vacuum creating implement, and

Fig. 5 is a fragmentary side elevation illustrating one means which may be employed for connecting the operating element to the movable element of the vacuum creating implement.

In the application Serial No. 7 431 there is disclosed a vacuum creating instrument including a cylinder portion 7 within which a piston 18 reciprocates, upon downward movement of which air pressure within or beneath the covering is reduced, as well as within the jar J housed thereby.

In the application, Serial No. 8073 there is disclosed a pair of nested cup members 4-. and 5 arranged one within the other and providing between them an annular space S to receive the lower end of the inverted cup member or bell 14:. This lower end extends within or is submerged in a column or body of liquid, such as water, 25. In

VACUUM-CREATING INSTRUMENT.

14, 1925. Serial No. 9,279.

this device, movement of the bell 14: upwardly, creates a reduction of pressure within the space housed by the bell, as well as within the jar 12 confined therein.

The present invention relates to means adaptable particularly for the operation of the piston 18 of one application and bell 1 1 of the other.

In the first instance, the piston 18 is provided at its bottom with a yoke 26, the arms 27 of which are disposed, parallel with each other and extend upwardly through the exterior of the cylinder below the point of operation of the piston therein. In adapting the present invention to the device disclosed by the said application, the upwardly extending arms 27 of the yoke member are provided on one edge with teeth 30, whereby the said arms, in effect, produce rack bars. These bars are in mesh with the teeth of gears 31 rotatably supported in gear framing 32 carried by the base or support of the implement. One of these frames is ar ranged at each side of the cylinder, and each provide spaced parallel bars 33 enclosing the upstanding arms 27 at their outer ends and carrying the gears 31, intermediate gears 3 1 in mesh therewith and the main power or drive gears 35. The inner ends of these frame members are provided with bearings 36 to rotatably receive a shaft 37 to which the main power gears are rigidly connected. The bearings 36 are supported upon standards 38 secured to the base of the instrument. One end of the shaft 37 is provided with an operating handle 39, by means of which the shaft may be rotated.

In operation, the jar J is placed in proper position beneath the bell 15 while the piston 18 is in raised position. After this has been done and bell 15 is properly seated, the handle 39 is operated to rotate the gear trains so as to move the rack bars 27 downwardly. This causes even downward pressure on both rack bars, whereby the piston 18 is moved bodily downward without tilting and without undue strain upon the piston or any of its component parts. If desired, one or more gears of the gear train may be segments, so that rotation of the same will be limited. In such instance, the teeth will be so arranged that further operation of the gears will be prevented when the yoke carrying the piston 18 has moved a preso 'ibed distance. This Will assure against undue strain upon the elastic element 19 ofthe piston,

In adapting the present invention to the instrumentdisolosed by application, Serial No. 8073 the dome 14 has its diametrically disposed blocks 18 provided with outwardly extending studs 17, and these studs may be either afi'ixed to the upper ends of rack bars 40 or romovably attached thereto. In Figure 4, the studs may be driven through the rack bars 40 and secured in the blocks 18, while in Figure 5 the upper ends of the rack bars are recessed as at ll to removably engage with the studs 17. the invention, the handle 39 is rotated in such direction as to cause the hell or dome 14: to move upwardly, and as the gears for operation with the rack bars 10 are driven at uniform speed, the dome 14 will be moved bodily so that its lower edge throughout its circumference will travel in true horizontal position throughout its vertical movement.

From the foregoing it is apparent that means of extremely simplified nature has been provided for the accomplishment of the desired results. I am aware, however, that variations in the details of construc tion, the manner of associating the parts together, the means for driving the rack bars, may be subjected to variations in accomplishingthe one result. I reserve to myself, therefore, the right to resort to such variations, alterations and assemblages In this form of bearings, gearsmounted between said side.

bars and operatively connected to said rack bars, and means carried by said standards and associated with the bearings of said frames for driving said gears simultaneously.

2. In a vacuum creating instrument, the combination with a movable member, of a pair of rack bars carried by said member, a pair of standards, gear frames associated with said standards, and comprising a bearing portion and parallelly disposed side bars, U-sha, 3ed, and inclosing said rack bars at the bl ht portion of said frames, gears mounted between said side bars and operatively connected to said rack bars, a shaft supported by said standards and journaled in the bearing portion of said gear frames, and a crank fixed to said shaft for driving said gears simultaneously.

In testimony whereof I aflix my signa ture.

FREDERICK v. WINTERS. 

